def setup_aatopology(self):
GMIN.initialize()
pot = GMINPotential(GMIN)
coords = pot.getCoords()
nrigid = old_div(coords.size, 6)
print("I have %d water molecules in the system"%nrigid)
print("The initial energy is", pot.getEnergy(coords))
water = create_base()
system = RBTopology()
system.add_sites([deepcopy(water) for i in range(nrigid)])
self.potential = pot
self.nrigid = nrigid
self.render_scale = 0.15
self.atom_types = system.get_atomtypes()
self.draw_bonds = []
for i in range(nrigid-1):
self.draw_bonds.append((2*i, 2*i+1))
self.draw_bonds.append((2*i, 2*i+2))
return system
def setup_aatopology(self):
GMIN.initialize()
pot = GMINPotential(GMIN)
coords = pot.getCoords()
nrigid = coords.size / 6
print "I have %d water molecules in the system"%nrigid
print "The initial energy is", pot.getEnergy(coords)
water = create_base()
system = RBTopology()
system.add_sites([deepcopy(water) for i in xrange(nrigid)])
self.potential = pot
self.nrigid = nrigid
self.render_scale = 0.15
self.atom_types = system.get_atomtypes()
self.draw_bonds = []
for i in xrange(nrigid-1):
self.draw_bonds.append((2*i, 2*i+1))
self.draw_bonds.append((2*i, 2*i+2))
return system
import numpy as np
import oxdnagmin_ as GMIN
from pygmin.potentials.gminpotential import GMINPotential
import pygmin.basinhopping as bh
from pygmin.takestep import displace
from pygmin.storage.database import Database
# initialize GMIN
GMIN.initialize()
# create a potential which calls GMIN
potential = GMINPotential(GMIN)
# get the initial coorinates
coords = potential.getCoords()
coords = np.random.random(coords.shape)
# create takestep routine
step = displace.RandomDisplacement(stepsize=1.)
# store all minima in a database
db = Database(db="storage.sqlite", accuracy=1e-2)
# create Basinhopping object
opt = bh.BasinHopping(coords, potential, step, db.minimum_adder())
# run for 100 steps
opt.run(1000)
# now dump all the minima
i = 0
for m in db.minima():
i += 1
GMIN.userpot_dump("lowest_%03d.dat" % (i), m.coords)
self.add_option("--block1",type="int",
dest="block1", default=100,
help="maximum number of steps with no improvement",
group="Basinhopping")
def create_basinhopping(self, add_minimum=None, potential=None):
if(self.target != None):
add_minimum = self.check_converged
self.opt = AppBasinHopping.create_basinhopping(self, add_minimum=add_minimum)
return self.opt
def check_converged(self, E, coords):
if(E<(self.target+EDIFF)):
print "#found minimum"
t1= time.clock()
timespent= t1 - t0
print "quenches functioncalls timespent"
print "%d %d %f"%(self.opt.stepnum, self.potential.ncalls, timespent)
exit()
if __name__ == "__main__":
# let GMIN do some initialization
GMIN.initialize()
# create a OXDNA application
app = AppOXDNA()
# and run it
app.execute()
def main():
# add some program options
parser = OptionParser(usage="usage: %prog [options] storage")
parser.add_option(
"--write-disconnect",
dest="writeDPS",
action="store_true",
help="generate min.dat and ts.dat to use with disconnectDPS")
parser.add_option("-m",
dest="writeMinima",
action="store_true",
help="dump minima to screen")
parser.add_option("-t",
dest="writeTS",
action="store_true",
help="dump transition states to screen")
parser.add_option("--coords",
dest="writeCoords",
action="store_true",
help="export coordinates files")
parser.add_option("--xyz",
dest="writeXYZ",
action="store_true",
help="export xyz files")
(options, args) = parser.parse_args()
# print help if no input file is given
if (len(args) != 1):
parser.print_help()
exit(-1)
db = Database(db=args[0])
if (options.writeMinima):
print "List of minima:"
print "---------------"
for m in db.minima():
print "%f\t\tid %d" % (m.energy, m._id)
print "END\n"
if (options.writeTS):
print "List of transition states:"
print "--------------------------"
for ts in db.transition_states():
print "%d\t<->\t%d\tid %d\tenergies %f %f %f"%\
(ts.minimum1._id, ts.minimum2._id, ts._id, ts.minimum1.energy, ts.energy, ts.minimum2.energy)
print "END\n"
if (options.writeDPS):
writeDPS(db)
if (options.writeCoords):
GMIN.initialize()
i = 0
for m in db.minima():
i += 1
filename = "lowest/lowest%03d.cif" % (i)
print "minimum", i, "energy", m.energy, "to", filename
GMIN.userpot_dump(filename, m.coords)
if (not TO_PDB is None):
os.system(TO_PDB % filename)
np.savetxt("lowest/coords_%03d.txt" % (i), m.coords)
if (options.writeXYZ):
traj = open("lowest/traj.xyz", "w")
i = 0
for m in db.minima():
i += 1
filename = "lowest/lowest%03d.xyz" % (i)
print "minimum", i, "energy", m.energy, "to", filename
export_xyz(open(filename, "w"), m.coords)
export_xyz(traj, m.coords)
traj.close()
def main():
# add some program options
parser = OptionParser(usage = "usage: %prog [options] storage")
parser.add_option("--write-disconnect",
dest="writeDPS", action="store_true",
help="generate min.dat and ts.dat to use with disconnectDPS")
parser.add_option("-m",
dest="writeMinima", action="store_true",
help="dump minima to screen")
parser.add_option("-t",
dest="writeTS", action="store_true",
help="dump transition states to screen")
parser.add_option("--coords",
dest="writeCoords", action="store_true",
help="export coordinates files")
parser.add_option("--xyz",
dest="writeXYZ", action="store_true",
help="export xyz files")
(options, args) = parser.parse_args()
# print help if no input file is given
if(len(args) != 1):
parser.print_help()
exit(-1)
db = Database(db=args[0])
if(options.writeMinima):
print "List of minima:"
print "---------------"
for m in db.minima():
print "%f\t\tid %d"%(m.energy, m._id)
print "END\n"
if(options.writeTS):
print "List of transition states:"
print "--------------------------"
for ts in db.transition_states():
print "%d\t<->\t%d\tid %d\tenergies %f %f %f"%\
(ts.minimum1._id, ts.minimum2._id, ts._id, ts.minimum1.energy, ts.energy, ts.minimum2.energy)
print "END\n"
if(options.writeDPS):
writeDPS(db)
if(options.writeCoords):
GMIN.initialize()
i=0
for m in db.minima():
i+=1
filename = "lowest/lowest%03d.cif"%(i)
print "minimum",i, "energy",m.energy,"to",filename
GMIN.userpot_dump(filename, m.coords)
if(not TO_PDB is None):
os.system(TO_PDB%filename)
np.savetxt("lowest/coords_%03d.txt"%(i), m.coords)
if(options.writeXYZ):
traj=open("lowest/traj.xyz", "w")
i=0
for m in db.minima():
i+=1
filename = "lowest/lowest%03d.xyz"%(i)
print "minimum",i, "energy",m.energy,"to",filename
export_xyz(open(filename, "w"), m.coords)
export_xyz(traj, m.coords)
traj.close()
